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yulyashka [42]
3 years ago
9

Please help, 15 points + brainliest!

Mathematics
2 answers:
Triss [41]3 years ago
8 0
I agree with the answer above
Black_prince [1.1K]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Volume of a sphere is given by

V = 4/3 pi r^3

where r is the radius

The radius is 6.5

V = 4/3 *pi * (6.5)^3

V = 4/3 pi *274.625

V =366.1666667 *pi

V = 366.16(repeating) pi ft^3

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an aquarium is on sale for $59.50 if this price represents a 15% discount from the oringanl price what is the origanl price
Veronika [31]
Question: An aquarium is on sale for $59.50. If this price represents a 15% discount from the original price, what is the original price? 

First, you multiply the sale price and the 15% discount

$59.50*.15 = [tex]$8.92 [/tex] (To change the percent to a decimal, you take out the percentage sign and divide by 100)

Now add $59.50 to $8.92

59.50+8.92=$68.43

Answer:

$68.43 (when rounded to the nearest cent)
or
$68 (when rounded to the nearest dollar)
or
$70 (when rounded to the nearest ten dollar)
5 0
3 years ago
Please help i been asking since yesterday
Advocard [28]

Answer:

To calculate the perimeter of a triangle, add the length of its sides. For example, if a triangle has sides a, b, and c, then the perimeter of that triangle will be P = a + b + c.

4 0
2 years ago
Read 2 more answers
A 20-foot ladder touches a building 16 feet up the wall. What is the measure of the angle the ladder makes with the ground (mACB
Alecsey [184]

The answer is the last option, 27°

4 0
3 years ago
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Find the total surface area of this cone.<br> leave your answer in terms of pi<br> R=3<br> L=4
Yuliya22 [10]

Answer:

total surface area of cone is πr (r+l)

22/7 x 3 (3+4)

22/7*3 (7)

22 x 3 ( as 7 that was divided by 22 was cut out with 7 in the bracket)

hence,

TSA of cone = 66pi

8 0
3 years ago
PLEASE HELP ME RN PLEASE ​
Advocard [28]

Answer:

1.

\frac{n^{2} - 1 }{2}

2.

\sqrt{29}

Step-by-step explanation:

Area of triangle=1/2×b×h

=

\frac{1}{2}  \times (n - 1)(n + 1)

\frac{( {n}^{2} + n - n - 1) }{2 }

\frac{ {n}^{2} - 1 }{2}

2. Area of triangle=14

\frac{ {n}^{2} - 1 }{2}  = 14

{n}^{2}  - 1 = 28

{n}^{2}  = 29

n =  \sqrt{29}

please rate well and mark BRAINLIEST.

thanks

3 0
2 years ago
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